Nut-lock



(No M0de1.)"

P. BRASNAHAN, L. RICHARDSON 8v A. PRITSCI.

NUT LOCK.

Patented Dec. 29.1891.

'Ninn STATES PATENT PATRICK BRASNAHAN, LANCELOT RICHARDSON, AND ADOLFFRITSCHI, OFl SUISUN CITY, CALIFORNIA.

NUT-LOCK.

i SPECIFICATION forming part of Letters Patent No. 466,014, datedDecember 29, 1891.

Application filed April l1, 1891. Serial No. 388,604. (No model.)

State of California, have invented a new and useful Nut-Lock, of whichthe following is a specification.

This invention relates to improvements in.

xo nut-locks, and the objects in view are to provide a lock of cheap andsimple construction adapted to be mounted upon a bolt in such positionas to in some cases answer for a washer and to lock the nut in anyof itspositions upon the bolt and in such manner that the former may bereadily removed, when occasion may require, without destroying theefficiency of the lock.

Other objects and advantages of the invenzo tion Will appear in thefollowing description,

and the novel features thereof will be particularly pointed out in theclaim.

Referring to the drawings, Figure 1 is a side elevation of a portion ofa railway-joint the nuts of which are locked in accordance with ourinvention. Fig. 2 is a detail in perspective of the lock-plate and lock.Fig. 3 is a detail of the locking strip or pin.

Like numerals of reference indicate like 3o parts in all the iigures ofthe drawings.

l designates the rails, 2 the fish-plates, 3 the bolts, and 4 the nuts,of an ordinary railjoint; or said bolts may be passed through any otherobject desired.

3 5 5 designates a rectangularmetal plate,

which serves as a Washer and also as a baseplate for the lock. Thisplate is provided with a central perforation 6, which receives the boltand has its upper edge cut away,

4o leaving projections at the upper corners, which latter are outwardlyturned to form bearing-ears 7.

The locking-plate 8 terminates at its opposite ends in reduced bearings9, which loosely lit into the bearing-ears, so that the plate is.

-notch or recess 10 vertically above the cen ter of the bolt-opening,and at each side of 5o said recess there is formed in the lower edge ofthe locking-plate angular recesses 1l,which are concentric with thecenter of the boltopening 6.

In operation, the bolt having been placed 5 5 in position, the combinedwasher and baseplate is neXt mounted in position, and the locking-platebeing swung up the nut is then applied, and after having been screwedsecurely in the bolt the locking-plate is re- 6o leased and one of itsnotches 10 or l1 engages and receives an adjacent corner of the nut inaccordance with the position of the same. The above forms acomparatively secure lock for nuts, but is liable to become disengagedwith the edge of the nut, and for the purpose of more securely lockingthe nut, or, what would be more properly speaking, locking thelocking-plate, we employ the malleable-iron strips or keys 12. The stripor key, when employed, 7o has its inner end inserted between the Washer5 and the fish-plate or other object through .which the bolt is passed,and after the nut is in position the outer end of the strip or key isbent up and over the free end of the locking-plate, whereby the latteris prevented from any possible accidental disengagement with the nut. Byinserting a suitable tool under the free end of the key 13 the same maybe pried from over the locking-plate, the latter released and elevatedout of disen gagement with the nut, and the nut removed.

From the above it will be apparent that the nuts of bolts maybesuccessfully and securely l locked in such manner as will prevent theiraccidental displacement, and yet at the same time may be readily removedwhen occasion requires, and this, too, Without the destruction of thelock or any impairment whatever.

Having describedy our invention, what we 9o claim is- The combination,With the bolt and its nut, of the Washer having a perforation to receivethe bolt and mounted thereon in rear of the nut, said washer beingprovided at its upper edge with opposite eyes, a locking-plate reducedat its ends to form bearings taking in our own We have hereto Llxed oursignatures xo the eyes and provided at the center of its in presence oftwo Witnesses.

lower edge md at each side thereof With ren j A cesses concentric withthe center of the bolt, and a removable locking-pin inserted in rearADOLF FRITSCHI of the plate and having its outer end bent out and overthe lower edge of the locking- Witnesses: plate, substantially asspecied. WVM. NELSON BOWEN,

In testimonytlmt We claim the foregoing as l OsWALD RICHARD SHEPPA.

